Goldfish with other fish??

Discussion in 'Aquarium Stocking Questions' started by Hamham, Jul 29, 2015.

  1. H

    Hamham New Member Member

    I have 5 guppies 5 lyretail mollies and 5 serpea tetra in my 20 gallon aquarium. I was wondering if I could put in a few common goldfish that grow to about 6 inches???
     
  2. Coradee

    Coradee Moderator Moderator Member

    Common goldfish can get 18" or more & are not tropical fish, keeping them in high temperature can shorten their lifespan, imo they're best kept in a pond
     
  3. Reyes

    Reyes Valued Member Member

    Exactly, you will be mixing cold water with tropical fish. On top of that, 20g is not enough for 1 fancy Goldfish, let alone a Common.
     
  4. Anders247

    Anders247 Fishlore Legend Member

    Besides what's been mentioned about goldfish, lyretail mollies should have at least a 30g.....
     
  5. CindiL

    CindiL Fishlore Legend Member

    Besides whats already been said, goldfish as they grow will try and eat anything that will fit into their mouths including guppies. They're best with their own kind :)
     
  6. Dom90

    Dom90 Fishlore VIP Member

    Although 5 lyretail mollies would make a 30g WAY overstocked, in terms of bioload, so he would need an even bigger tank in this case.
     
  7. CindiL

    CindiL Fishlore Legend Member

    Hmmm, I have four lyretails and many other fish in my 33 long but my plants take care of the bio-load so I guess some of that will depend on the setup. Lyretails aren't big like balloons. They get up to around 4" max long though like any other molly. Its funny because AQ Advisor only shows me at 80% stocked with my fish (below in my sig).

    Are you thinking of sailfin mollies maybe?
     
  8. Dom90

    Dom90 Fishlore VIP Member

    Yea that's probably it. But the average person wont have the amount of plants you have, or the nitrate land plants, so they'd probably be overstocked.
     
  9. CindiL

    CindiL Fishlore Legend Member

    Well thats true about the plants! You'd laugh if you saw my 10g with the 50 or so molly fry. Some are about an inch now so I'm going to see about taking them to the local pet store this weekend.
     




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